30 | 180R9346 | AQ240486503020en-001702 © Danfoss | 2023.03
Operation guide Installation, Operation and Maintenance APP 53-92 pumps
8.1 Operation
The chart below illustrates the corrosive resist-
ance of dierent types of stainless steel related to
NaCl concentration and temperature.
All wetted parts of the APP pump are made of
Duplex or Super Duplex.
If the water pump is operated at high salinity
always ush the water pump with fresh water at
operation stop in order to minimize the risk of
crevice corrosion.
8. Temperature and
corrosion
316L
Super Duplex
80
º
C
70
60
50
40
30
20
100
160 1600
1000
16000
10 000
160000
100 000
CI
-
ppm
NaCI
ppm
Duplex
NaCI vs. temperature
9. Installation
See example below on how to mount the pump
and connect it to an electric motor or combus-
tion engine (special coupling).
For further instruction on installation of coupling
see APP Pump Instruction 180R9368.
If alternative mounting is required. please
contact your Danfoss sales representative for
further information.
Note: Do not add any axial or radial loads to the
pump shaft.
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